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. 2017 Jan 5;372(1711):20160051. doi: 10.1098/rstb.2016.0051

Table 1.

Measures of variability for illustrative scenarios in a population consisting of a single speaker (s1: first three rows) or two speakers (s1 and s2, remaining rows), each speaker producing two labels for each of two nouns (cow and pig) using two plural markers (fip and tay). Note that, for a language produced by a single speaker, H(Marker|Noun) and H(Marker|Noun, Speaker) are necessarily identical.

language P(fip) H(Marker) H(Marker|Noun) H(Marker|Noun, Speaker)
s1: cow fip, cow fip, pig fip, pig fip 1 0 0 0
s1: cow fip, cow fip, pig tay, pig tay 0.5 1 0 0
s1: cow fip, cow tay, pig fip, pig tay 0.5 1 1 1
s1: cow fip, cow fip, pig fip, pig fip 1 0 0 0
s2: cow fip, cow fip, pig fip, pig fip
s1: cow fip, cow fip, pig tay, pig tay 0.5 1 0 0
s2: cow fip, cow fip, pig tay, pig tay
s1: cow fip, cow fip, pig tay, pig tay 0.5 1 1 0
s2: cow tay, cow tay, pig fip, pig fip
s1: cow fip, cow tay, pig fip, pig tay 0.5 1 1 1
s2: cow fip, cow tay, pig fip, pig tay